/Engine/Plugins/Experimental/GeometryCacheAbcFile/Source/GeometryCacheAbcFile/Public/GeometryCacheAbcFileSceneProxy.h
Get the MeshData for a given SampleIndex
true if the MeshData was retrieved successfully
virtual bool GetMeshData ( int32 SampleIndex, [FGeometryCacheMeshData](API\Plugins\GeometryCache\FGeometryCacheMeshData) & OutMeshData )